1938355044 has 12 divisors (see below), whose sum is σ = 4522828464. Its totient is φ = 646118344.

The previous prime is 1938355033. The next prime is 1938355109. The reversal of 1938355044 is 4405538391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1938354987 and 1938355005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80764782 + ... + 80764805.

It is an arithmetic number, because the mean of its divisors is an integer number (376902372).

Almost surely, 2^1938355044 is an apocalyptic number.

It is an amenable number.

1938355044 is an abundant number, since it is smaller than the sum of its proper divisors (2584473420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938355044 is a wasteful number, since it uses less digits than its factorization.

1938355044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161529594 (or 161529592 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 1938355044 is about 44026.7537299765. The cubic root of 1938355044 is about 1246.8410998578.

The spelling of 1938355044 in words is "one billion, nine hundred thirty-eight million, three hundred fifty-five thousand, forty-four".